.close_btn {
    float: right;
    margin-top: -6%;
    cursor: pointer;
    background-color: #FFFFFC;
    width: 10%;
    font-size: 0.8em;
    text-align: center;
    z-index: 1000;
    border-radius: 45% 5% !important;
    border: 1px solid #00427D;
}
a.close_btn {
    margin-left: -4%;
    background: #fff;
    margin-top: -6%;
    position: absolute;
}